Fractional second handling (millisecond time)

[kuna-matata]

Please also see danvk/dygraphs#654.

When I use library(dygraphs) with fractional second time series data, it appears to truncate or round the abscissa to the nearest whole second. The above post demonstrates that the rounding issue does not happen with direct dygraphs.js usage. I wonder if the issue has to do with the R interface. Here's example code in R that illustrates the issue for me:

library(xts)
library(dygraphs)
r = 5
t = seq(0,2*pi,by=0.03)
x = r*cos(t)
y = r*sin(t)
t0 = Sys.time()
ts = xts(y,t0-unclass(t0)+x)
dygraph(ts)

[TonyDIRL]

Bump on this query.

@kuna-matata and I have been trying to figure this out for quite a while!

dygraphs is quite powerful because of the volume of data it can quickly process but not been able to plot sub-second data is quite limiting.

[DaveRom]

@TonyDIRL @kuna-matata @jjallaire

Were ye able to find a solution to this problem?
I am also trying to build sub second charts with dygraphs

[TonyDIRL]

No, unfortunately, I have not been able to find a solution to this issue

[TonyDIRL]

Hi,

As this question has been asked by several different people in different repo's I thought I'd summarize it here for future reference.

The problem is generating subsecond graphs with dygraphs.
The following jfiddle illustrates that this can be done with javascript: http://jsfiddle.net/kaliatech/DfWNz/3/

However, transferring the corresponding code to axisLabelFormatter and valueFormatter unfortunately doesn't yield the same results

   options(digits.secs=9)
   len <- 60 
   RDData <- xts(runif(len,0,1), seq(as.POSIXct("2015-04-01 10:00:00"),as.POSIXct("2015-04-01 10:00:01"), length = len),tz="GMT")

  dygraph(RDData) %>%
  dyAxis(
    "x",
    label = "Number",
    axisLabelFormatter = 'function(d,gran){ return Dygraph.zeropad(d.getHours()) + ":" + 
                                 Dygraph.zeropad(d.getMinutes()) + ":" + 
                                 Dygraph.zeropad(d.getSeconds()) + "." + 
                                 Dygraph.zeropad(d.getMilliseconds());}',
    valueFormatter = 'function(ms){    var d = new Date(ms);
                          return Dygraph.zeropad(d.getHours()) + ":" + 
                          Dygraph.zeropad(d.getMinutes()) + ":" + 
                          Dygraph.zeropad(d.getSeconds()) + "." + 
                          Dygraph.zeropad(d.getMilliseconds());}'
    ,ticker="Dygraph.dateTicker"
  )

Have tried numerous variations but can't get this to work